A DQN-Based Consensus Mechanism for Blockchain in IoT Networks

【Author】 Liu, Zhiming; Hou, Lu; Zheng, Kan; Zhou, Qihao; Mao, Shiwen

【Source】IEEE INTERNET OF THINGS JOURNAL

【影响因子】10.238

【Abstract】The integration of the blockchain and Internet of Things (IoT) systems can effectively guarantee data security in IoT applications. To facilitate the use of blockchain on resource-constrained IoT end devices, we propose RAFT+ with a new leader selection scheme in this article, which is based on the distributed consensus algorithm RAFT. The design of RAFT+ aims at mitigating the imparities between different types of IoT end devices and enabling these devices to allow different types of IoT end devices to participate in block consensus, thus maintaining strong consistency of the blockchain network. The leader selection scheme is generated by a deep Q-Network (DQN), which can make the optimal selection of the leader under various conditions by leveraging the limited system resources as well as balancing the load of the consensus mechanism on multiple IoT end devices. Simulation results show that RAFT+ can enhance the system performance while maintaining the security of the system under high load conditions.

【Keywords】Blockchain; consensus mechanism; deep Q-Network (DQN); Internet of Things (IoT); RAFT

【发表时间】2021 DEC 3

【收录时间】2022-07-17

【文献类型】实证性文章

【主题类别】

区块链技术-协同技术-物联网